watercourse vs crossing

watercourse and crossing both are nouns.

Word	Noun	Adjective	Verb	Adverb
watercourse	Yes	No	No	No
crossing	Yes	No	No	No

watercourse (noun)	crossing (noun)
a conduit through which water flows	a voyage across a body of water (usually across the Atlantic Ocean)
a natural body of running water flowing on or under the earth	traveling across
natural or artificial channel through which water flows	(genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids
	a path (often marked) where something (as a street or railroad) can be crossed to get from one side to the other
	a junction where one street or road crosses another
	a point where two lines (paths or arcs etc.) intersect
	a shallow area in a stream that can be forded